Indicates what the source for generating the Piano effects is.
Audacity Timing file, Midi file, xLights generated Polyphonic Transmission or Notes Source.
If Polyphonic transmission is selected, then a window will be displayed and there will be a pause whilst the timings are first generated.
If ‘Audacity Timing file’ is selected, you will be prompted for the location of the Audacity file.
If ‘Midi file’ is selected, you will be prompted for the location of the Midi file.
If Notes Source is selected, then a timing track source can be used (further described after the table). This is the preferred option.